Roller-setting apparatus for printing presses



6%., 9 mm 1,4m1-94 G. P. ROBIINSON ROLLER SETTING APPARATUS FOR PRINTING PRESSES Filed Feb. 1922 2 Sheets-Sheet 1 G. P. ROBINSON I ROLLER SETTING APPARATUS FOR PRINTING PRESSES Filed Feb. 28 1922 Z SheBts-Shwt 2 [mzr Patented (let. 2, 1923.

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GLENN P. ROBINSQN, OF PHILADELPHIA, PENNSYLVANIA.

ROLLER-SETTING APPARATUS FOR PRINTING PBESSES.

Application filed Februaiy 28, 1922. Serial No. 539,817.

To all whom 1' 6 may concern:

Be it known that I, GLENN P. ROBINSON, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Roller-Setting Apparatus for Printing Presses of which the following is a specifica-tion.

One object of my invention is to provide improved means which will expedite the setting of form rollers on printing presses allowing the easy and rapid setting of the form roller to the type or plate cylinder and distributer or steel roller without taking pictures or without the use of feeler or light on distributor; thus effecting economy of the rollers since by having rollers properly set saves the surface and lengthens the life of the rollers. 7

Another object is to effect the saving of time at make readytby having properly set rollers to start.

Other advantages are that my improved apparatus is effective in improving the quality of the product and reducing the power and cost necessary to operate the press.

A further object is to make my invention in a simple form which can be readily manufactured.

These objects, and other advantageous ends which will be described hereinafter, l

attain in the following manner, reference.

being had to the accompanying drawings in which 7 Figure 1 is a fragmentary elevationillustrating my invention; certain of the pivotal portions being shown in section with the form roller in proper set-relation to the plate cylinder and steel roller or distributer,

Figure 2 is a view of the same general character as shown in Figure lillustrating the form roller in itspropcr set relation to the plate cylinder and steel roller or distributor; said view showing the form roller of smaller diameter than illustrated in Figure 1 and representing said form roller after it has shrunk, so that the same apparatus is capable of properly setting the form roller irrespective of the variation in its diameter,

Figure 3 is a fragmentary front elevation showing the apparatus illustrated in Fig ures 1 and 2 Figure 4: is a fragmentary elevation showmg the adjusting means,

Figure 5 is a detail side view of one of the brackets,

Figure 6 is a perspective view of one of the eccentric regulating cams and its associated parts, and

-Figure 7 is a face view of one of the levers operative to efiect movement of the parts shown in Figure 6.

Referring to the drawings, 10 represents the type or plate cylinder of a printing press, 11 represents the steel roller or distributer and 12 represents the forinroller. A pivot member 13, which may be in the form of a bolt, is secured to the side 14 of the frame of the printing press and said pivot member extends through a slot or hole 15 in a bracket 16; said slot or hole being of slightly greater size than the diameter of the fixed pivot member 13.

The bracket 16 has a socket or bearing portion 17 in which is mounted the trunnion or shaft 18 of the form rollerl2 so that said form roller can rotate in the portion 14: as a support or bearing. A slot 19 is formed in the bracket 16 and within the confines of this slot is positioned an eccentric cam 20 which is preferably formed integral with a short adjusting shaft or cylindrical pin 21. This adjusting shaft 21 is rotatably mounted in a hole 22 in the frame; the axis of the cam 20 being eccentric to the axis of the shaft 21. The outer end portion of the shaft 21 is provided with flattened or angular surfaces 23 and is screw threaded at 24. The end of the eccentric cam 20 opposite the shaft 21 is provided with an enlarged disk head 25 for engagement with one side surface of the bracket 16; said head being of larger diameter than the width and length of the slot 19. A. clamping and adjusting lever 26 has a collar portion 27 with a slot 28 which is adapted to be placed over the outer end portion of the adjusting shaft 21; said slot 28 having flat opposed side surfaces 29 adapted for registry and engagement with the flat surfaces 23 of the outer end portion of the adjusting shaft 21 so that when the lever 26 is swung, the adjusting shaft 21 will be rocked or rotated on its axis and the eccentric regulating cam 20 will be moved.

A nut 30 is adapted to be screwed on the portion 2 1 of the shaft 21 so as to jam or bind the collar aortion 27 a ainst one side of the r b irame 14; and so as to cause the disk to bind and l'iold'the bracket 16 to the frame.

s shown in Fi ures 1 and 2. it will he noted that the eccentric cam 20 is of a diameter equal to the width of the slot 19 so 7 that. the peripheral edge surface of the cam engages the opposite side walls of the slot 19 and. if the shaft 21 is swung on its axis by means of the lever 26, the bracket 16 will be swung on the pivot 11 ember 13 so as to swing the form roller 12 upward or downward into axes will form an equilateral triangle. The bracket 16 can be duplicated on the opposite side of the machine together withthe associated parts as above described and it will be noted that in setting the form roller if the eccentric cam for convenience is moved to allow the form roller to be backed away from the form cylinder, the movement of said eccentric cam in an opposite direction will serve as common means for setting the form roller against the steel distributer roller and this action will allow the automatic setting of the form roller in proper position to the plate cylinder. In other words, a single means including the shaft 21 and eccentric cam 20 is suflicient to cause the swinging of the bracket and form roller to allow the form roller to properly seat itself relatively to the plate cylinder 10 and roller 11.

The collar portion 27 of the adjusting lever 26 preferably has a portion 31 which serves as an idicating pointer for traversing indicating marks on the frame 1 1 and these indicating marks can be made in the formof an arc concentric with the axis of the shaft 21so that .a workman can readily determine the extent of movement. of the shaft 21a'nd the form roller can be accurately adjusted after which thenuts'BO can be tightened to hold the brackets and their associated parts in their adjusted position.

The parts as previously stated can be duplicated on both sides of the machine and it isnot necessary for a workman to make several adjustments of the bearings before he can secure the proper association of the form roller to the plate cylinder and steel roller as was previously necessary. It will thus be noted that withmy invention, I provide a swinging bracket fitted with a roller socket and mounted on a member having a fixed or stationary axis whose radius, in a prescribed area is betwcenand common to two convex surfaces. Thus with my invcn- 'tion the bracket has one pivot common to two surfaces and the contact to the two common surfaces such as'the surfaces of the cylinder '11) and steel or distributer roller 11 is controlled by one eccentric cam. Furthermore by settiz-ig the roller 12 to one surface of one of the other rollers the proper contact on the second surface, or the other roller, is made automatically. 2

By making the hole 15 in the bracket 16 of slightly greater size than the member 13, the structure se ves as compensating means that in settii j the form roller. for QX- ample as shown in re 1. that if the form roller engages the plate cylinder before it engages the roller 11 a continued movement of the eccentric cam will move the bracket so as to allow the roller 12 to move upwardly into engagement with the roller 11. Fun thermore compensation is provided due to said hole 15 when the roller 12 shrinks since it'allows the roller 12 to be moved with one portion of the wall of the hole moved away from the member 13 as clearly shown in Figure 2. 7 iVh'ile I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit In self to the precise construction set fort but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Havin'g thus described my invcntioin what I claim as newand desire to secure by Letters Patent is:- r

'1. In an apparatus of the character dcscribed for setting a roller relatively to two other rollers including a bracket carrying the roller and having an opening and a slot formed therein, a cam ope 'ative within the slot to move said bracket to bring the roller into contact with the surfaces of said two rollers, and a member passing through the opening and pivotally carrying the bracket, the opening in the bracket being greater than the di'ameter of the member to permit continued movement of the bracket until the surfaces of the roller contact with the ad jacent surfaces of said two rollers. V

2. In an apparatus of. the character described for setting a roller relatively to two other rollers including a bracket carrying therolle-r and having an opening formed therein, a pintle passing through the opening, said opening being greater than the diameter of the pintle to permit continued movement of the bracket until the surfaces of the roller contact with the adjacentsun faces of said two rollers, and means for till swinging the bracket on its pivot for bringing the roller into contact with the surfaces of the said two rollers.

3. In an apparatus of the character described for setting a roller relatively to two other rollers including a movable support carrying the roller and having;- an opening l orinerl therein, means {or moving said support. and a member passing through the openin said opening being greater than the diameter of said member to permit continued movement of the support until the surfaces of the roller contact with the adjacent sur faces of said two rollers.

at. In an apparatus of the character described for setting a roller relatively to two other rollers including a bracket carrying the roller and having an opening formed therein, a pintle passing through. the opening said opening being greater than the diameter of the pintle to permit continued movement of the bracket until the surfaces of the roller contact with the adjacent surfaces of said two rollers, an eccentric for swinging the bracket on its pivot for bring- .ing the roller into contact with the said two rollers.

5. in an apparatus of the character described for setting a roller relatively to two other rollers including a bracket carrying the roller and having an opening formed therein, a pintle passing; through the open ing said opening being greater than the diameter oi: the pintle to permitcontinued movement of the bracket until the surfaces of the roller contact with the adjacent surfaces of said two rollers, an eccentric for swinging the bracket on its pivot for bringing the roller into contact with the said two rollers, and means "for operating said cc centric.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GLENN P. ROBINSON.

Witnesses ELIZABETH GARBE, CHAS. E. Porrs. 

